Improved consistency of grammar and added note about connecting on SSMS (#185)

This update improves the grammar in the command-line.md file, and adds warning from Simon about connecting on SSMS.

Signed-off-by: susanmdouglas [email protected]

Author: susanmdouglas-aws

_usage/command-line.md

@@ -22,101 +22,86 @@ Windows and Linux platforms and speak the PostgreSQL protocol.
 
 ### Using `sqlcmd` to connect to the DB instance {#babelfish-connect-sqlcmd}
 
-The most common way to connect to and interact with Babelfish
-is with the SQL Server `sqlcmd` utility, as shown in the following.
-
+One way to connect to and interact with Babelfish is with the SQL Server `sqlcmd` utility. A Babelfish 
+connection string takes the following form:
 
 ```bash
 sqlcmd -S host.sample.com,1433 -U PUT_USER_HERE -P PUT_PASSWORD_HERE -d PUT_DBNAME_HERE
 ```
 
 Where:
 
-- `-S` is the server name and port of the DB instance.
+- `-S` is the server name and TDS port of the DB instance.
 - `-U` is the login name of the user.
 - `-P` is the password associated with the user.
-- `-d` is the database that is selected initially.
+- `-d` is the database to which you are connecting. This value is optional; if omitted, the client will 
+connect to the `master` database.
 
-After connecting with `sqlcmd`, you can use familiar T-SQL syntax to create and
-manage database objects.
+After connecting, you can use familiar T-SQL syntax to create and manage database objects.
 
 ### Using SSMS to connect
 
-SSMS is one of the most commonly used clients to connect to Babelfish.
-
-In the following procedure, you connect to your Babelfish database by
-using SSMS. You can use the SSMS query editor to connect to a Babelfish database.
-
-
->
-> _You **can't currently connect using the SSMS Object Explorer**._
->
+SQL Server Management Studio (SSMS) is a commonly used SQL Server client. When loading SSMS, it 
+may attempt to connect with the Object Explorer `Connect to Server` dialog box. If this dialog 
+box opens by default, hit `Cancel`. Babelfish **only** supports connecting from the Query Editor.
 
 #### Connecting with SSMS
 
 1. Open the Connect to Server dialog by doing one of the following:
 
-   - Choose “New Query”.
-   - If the Query Editor is open, choose “Query” –
-     “Connection” – “Connect”.
+   - Choose `New Query`.
+   - If the Query Editor is open, choose `Query` –
+     `Connection` – `Connect`.
 
 2. Provide the following information for your database:
 
-   - For “Server type”, choose “Database Engine”.
+   - For `Server type`, choose `Database Engine`.
 
-   - For “Server name”, enter the DNS name. For example, your server
+   - For `Server name`, enter the DNS name followed by a comma and the TDS port. For example, your server
      name should look similar to the following:
 
      ```none
      host.example.com,1433
      ```
 
-   - For “Authentication”, choose “SQL Server
-     Authentication”.
+   - For `Authentication`, choose `SQL Server Authentication`.
 
-   - For “Login”, enter the user name that you chose to use when you
+   - For `Login`, enter the user name that you chose to use when you
      created your database.
 
-   - For “Password”, enter the password corresponding to that user name.
-
-   - Optionally, choose “Options”, and then choose the
-     “Connection Properties” tab.
-
-   - For “Connect to database”, specify the name of the database
-     to connect to, and choose “Connect”.
-
-3. If a message appears indicating that SSMS can't apply connection
-   strings, choose “OK”.
+   - For `Password`, enter the password corresponding to that user name.
 
+   - Optionally, choose `Options`, and then choose the
+     `Connection Properties` tab.
 
-#### Limitations
+   - For `Connect to database`, specify the name of the database
+     to connect to, and choose `Connect`.
 
-As previously stated, currently you can not connect using the SSMS Object Explorer.
+3. If a message appears indicating that SSMS can't apply the connection
+   strings, choose `OK`.
 
 
 ### Using `tsql` to connect
 
 `tsql` is a command line tool that is shipped as part of FreeTDS. It allows you
 to connect and to interact with Babelfish (or any other TDS enabled data source)
-from your Linux terminal.
+from a Linux terminal.
 
-Here is an example how to connect to Babelfish with `tsql`:
+A Babelfish connection string takes the following form:
 
 ```bash
 tsql -S database.example.com -p 1433 -U postgres -P secretpassword
 ```
 
-For information about using `tsql`, consult
-[the FreeTDS documentation](https://www.freetds.org/userguide/).
+For information about using `tsql`, consult [the FreeTDS documentation](https://www.freetds.org/userguide/).
 
 Note that `tsql` is not officially supported.
 
 
 ### Using `psql` to connect
 
-You can also use PostgreSQL's `psql` to connect to Babelfish.  `psql` has to
-connect to the PostgreSQL port (by default 5432), and you will have to use
-PostgreSQL SQL syntax instead of T-SQL.
+You can use PostgreSQL's `psql` client to connect to Babelfish on the PostgreSQL port (by default `5432`). 
+`psql` supports [PostgreSQL-style SQL syntax](https://www.postgresql.org/docs/current/sql-commands.html).
 
 Here is an example how to connect with `psql`:
 
@@ -125,5 +110,5 @@ psql -h database.example.com -p 5432 -U postgres -d dbname
 ```
 
 Note that Babelfish ships with a modified version of `psql`, which is intended
-for use by Babelfish development.  This version can produce incorrect results,
-and should not be used in production.
+for use by Babelfish development.  This version is not intended for use in a production
+environment.